I'll try to be quick to leave Mr. Thompson some time.
First, I have a correction. There have been very few oil spills but of the ones in Canada over the last five to 10 years, the one that occurred in British Columbia was directly related to a third-party hit. That was a municipal worker, a contractor, who hit the Kinder Morgan line in Burnaby. Fortunately, no one has been killed but it is something that is entirely avoidable.
Leak detection is something we are working on. I mentioned that in my testimony. It is an area that we can work harder on. We have met, for example, with the space agency. There are some really interesting technology innovations that we could use, going forward. Acoustics is another one we are looking at. They are very important.
Third, in terms of line locations, certainly better mapping is being done periodically, particularly in dense urban areas as we work with cities and over time get more accurate maps. That's a very positive thing. It's not the only solution, though, to third-party damage because even if you had very accurate line location, if you still have somebody who decides to put in a fence post and not call before digging.... We're not going to have markers running across every field, and with 110,000 kilometres of buried utility across the country. A lot of it has fence post markers, but we need people to call before they dig.